So I've been trying to make a game for a school project and wanted to add some easter eggs, but in order to do so I need to detect key input. I've been looking up how to do this for a while and couldn't find any ways that work. The setup I'm using is making a JOptionPane and creating it with a JDialog to make a title and add an icon to the window.
Here's my code so far:
import javax.swing.*;
import java.awt.*;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.KeyAdapter;
public class ObamaSimulator {
public static void main(String[] args) {
JLabel label; // text in JOptionPane
label = new JLabel("<html><center><b style = 'font-size: 40px; color: red;'>WELCOME</b><p style = 'width: 175px;'><br> To Obama Simulator. In this game you are obama, there isn't really much else to say <br>(The story will tell you more)<br>[press OK to continue or X to quit]", SwingConstants.CENTER);
String choice = JText("Yes", null, label, "Welcome!"); // Runs JText with option 1, option 2, label, and title, and outputs with the option they chose
if(choice == "Yes"){
game();
}else{
System.out.println("Baboon closed the window :(");
label = new JLabel("<html><center><p style = 'width: 175px;'>Game Closed", SwingConstants.CENTER);
JText("OK", null, label, null);
System.exit(0); // Used to end the program, IDK why it dosn't end by it's self
}
}
public static String JText(String op1, String op2, JLabel label, String title){
Object[] options; // Options in JOptionPane
JFrame frm = new JFrame(); // Frame used to make JOptionPane have icon
frm.setIconImage(new ImageIcon("Obama (1).gif").getImage()); // Sets icon of JOptionPane window
if(op1 == null){ // Checks if an option is missing
options = new Object[] {op2};
}else if(op2 == null){
options = new Object[] {op1};
}else{
options = new Object[] {op1, op2};
}
if(title == null){ // Checks if title is missing
title = "Obama Simulator";
}
JOptionPane jp = new JOptionPane(label , JOptionPane.DEFAULT_OPTION, JOptionPane.PLAIN_MESSAGE,null, options, options[0]); // Creates basic JOptionPane
JDialog dialog = jp.createDialog(frm, title); // Finishes by adding icon and title
dialog.setSize(350, 300); // Sets size
dialog.setLocationRelativeTo(null); // Centers the Window
dialog.setResizable(true); // Needed to make icon
dialog.addKeyListener(new KeyListener(){
@Override
public void keyTyped(KeyEvent e) {
// Nothing
}
@Override
public void keyPressed(KeyEvent e) {
// Nothing
}
@Override
public void keyReleased(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_UP){
System.out.println("up");
}
}
});
dialog.setVisible(true); // Sets JOptionPane visible
String choice = (String) jp.getValue(); // Sets Choice to variable
return choice; // Sends choice back to meathod
}
public static void game(){
JLabel label;
String choice;
System.out.println("Baboon picked yes");
label = new JLabel("<html><center><p style = 'width: 175px; font-size: 10px;'>You are Obama, having a lovely day in Minecraft, feeding your dog. You need more quarts and Redstone blocks to build a lighthouse by the sea. While running to your portal room you find an untamed wolf, do you want to tame it?", SwingConstants.CENTER);
choice = JText("Tame", "Dont tame", label, null);
if(choice == "Tame"){
System.out.println("Baboon picked tame");
label = new JLabel("<html><center><p style = 'width: 175px; font-size: 10px;'>You shove a bone deep into the mouth of the wolf. You tame it but it makes you feel horrible, maybe it will make you feel better if you dye the collar?", SwingConstants.CENTER);
choice = JText("Dye", "Dont dye", label, null);
if(choice == "Dye"){
System.out.println("Baboon Dyed");
}
}
// System.exit(0);
}
}
I tryed to use keyListener on the dialog, but it dosn't work, I've tryed other basic examples and they work, I just have no clue what's wrong with mine.
If you could help, I would greatly appreciate it! Thanks in advanced :)
CodePudding user response：
You're going to want to avoid KeyListener. When ever you have another focusable component on the screen, it's not going to work.
Instead, you'll want to look at How to Use Key Bindings.
choice == "Yes" is not how you compare Strings in Java, you'll want to use "Yes".equals(choice) instead.
I'd also suggesting having a look at How to Use CardLayout as another means for flipping the UI ;)
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
import javax.swing.AbstractAction;
import javax.swing.ActionMap;
import javax.swing.ImageIcon;
import javax.swing.InputMap;
import javax.swing.JComponent;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.KeyStroke;
import javax.swing.SwingConstants;
public class ObamaSimulator {
public static void main(String[] args) {
JLabel label; // text in JOptionPane
label = new JLabel("<html><center><b style = 'font-size: 40px; color: red;'>WELCOME</b><p style = 'width: 175px;'><br> To Obama Simulator. In this game you are obama, there isn't really much else to say <br>(The story will tell you more)<br>[press OK to continue or X to quit]", SwingConstants.CENTER);
String choice = JText("Yes", null, label, "Welcome!"); // Runs JText with option 1, option 2, label, and title, and outputs with the option they chose
if ("Yes".equals(choice)) {
game();
} else {
System.out.println("Baboon closed the window :(");
label = new JLabel("<html><center><p style = 'width: 175px;'>Game Closed", SwingConstants.CENTER);
JText("OK", null, label, null);
System.exit(0); // Used to end the program, IDK why it dosn't end by it's self
}
}
public static String JText(String op1, String op2, JLabel label, String title) {
Object[] options; // Options in JOptionPane
JFrame frm = new JFrame(); // Frame used to make JOptionPane have icon
frm.setIconImage(new ImageIcon("Obama (1).gif").getImage()); // Sets icon of JOptionPane window
if (op1 == null) { // Checks if an option is missing
options = new Object[]{op2};
} else if (op2 == null) {
options = new Object[]{op1};
} else {
options = new Object[]{op1, op2};
}
if (title == null) { // Checks if title is missing
title = "Obama Simulator";
}
JOptionPane jp = new JOptionPane(label, JOptionPane.DEFAULT_OPTION, JOptionPane.PLAIN_MESSAGE, null, options, options[0]); // Creates basic JOptionPane
JDialog dialog = jp.createDialog(frm, title); // Finishes by adding icon and title
dialog.pack();//setSize(350, 300); // Sets size
dialog.setLocationRelativeTo(null); // Centers the Window
dialog.setResizable(true); // Needed to make icon
InputMap im = jp.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW);
ActionMap am = jp.getActionMap();
im.put(KeyStroke.getKeyStroke(KeyEvent.VK_UP, 0), "up");
am.put("up", new AbstractAction() {
@Override
public void actionPerformed(ActionEvent e) {
System.out.println("Up");
}
});
//
//dialog.addKeyListener(new KeyListener() {
//
// @Override
// public void keyTyped(KeyEvent e) {
// // Nothing
// }
//
// @Override
// public void keyPressed(KeyEvent e) {
// // Nothing
// }
//
// @Override
// public void keyReleased(KeyEvent e) {
//
// if (e.getKeyCode() == KeyEvent.VK_UP) {
// System.out.println("up");
// }
//
// }
//});
dialog.setVisible(true); // Sets JOptionPane visible
String choice = (String) jp.getValue(); // Sets Choice to variable
return choice; // Sends choice back to meathod
}
public static void game() {
JLabel label;
String choice;
System.out.println("Baboon picked yes");
label = new JLabel("<html><center><p style = 'width: 175px; font-size: 10px;'>You are Obama, having a lovely day in Minecraft, feeding your dog. You need more quarts and Redstone blocks to build a lighthouse by the sea. While running to your portal room you find an untamed wolf, do you want to tame it?", SwingConstants.CENTER);
choice = JText("Tame", "Dont tame", label, null);
if ("Tame".equals(choice)) {
System.out.println("Baboon picked tame");
label = new JLabel("<html><center><p style = 'width: 175px; font-size: 10px;'>You shove a bone deep into the mouth of the wolf. You tame it but it makes you feel horrible, maybe it will make you feel better if you dye the collar?", SwingConstants.CENTER);
choice = JText("Dye", "Dont dye", label, null);
if ("Dye".equals(choice)) {
System.out.println("Baboon Dyed");
}
}
// System.exit(0);
}
}